Rubber feet (round) for small electronic devices, purchased for electronic projects, 4 pieces per set / 4 sets. They have been stored in a parts box for many years. There is no guarantee of quality. Please consider purchasing only if you are okay with this. I have confirmed adhesion with the sample product in the image. ■ Main Specifications ・Material: Rubber ・Attachment: Double-sided tape ・Outer diameter: Approximately 21mm ・Contact surface diameter: Approximately 18mm ・Height: 9.5mm ・Manufacturer: 3M ■ Contents ・Rubber feet (round) 4 pieces / 4 sets There is no warranty after purchase. Please understand. Only those who understand the above conditions and agree to no returns and no claims are welcome to purchase.